| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * ChaCha 256-bit cipher algorithm, x64 SSSE3 functions |
| * |
| * Copyright (C) 2015 Martin Willi |
| */ |
| |
| #include <linux/linkage.h> |
| #include <asm/frame.h> |
| |
| .section .rodata.cst16.ROT8, "aM", @progbits, 16 |
| .align 16 |
| ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003 |
| .section .rodata.cst16.ROT16, "aM", @progbits, 16 |
| .align 16 |
| ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302 |
| .section .rodata.cst16.CTRINC, "aM", @progbits, 16 |
| .align 16 |
| CTRINC: .octa 0x00000003000000020000000100000000 |
| |
| .text |
| |
| /* |
| * chacha_permute - permute one block |
| * |
| * Permute one 64-byte block where the state matrix is in %xmm0-%xmm3. This |
| * function performs matrix operations on four words in parallel, but requires |
| * shuffling to rearrange the words after each round. 8/16-bit word rotation is |
| * done with the slightly better performing SSSE3 byte shuffling, 7/12-bit word |
| * rotation uses traditional shift+OR. |
| * |
| * The round count is given in %r8d. |
| * |
| * Clobbers: %r8d, %xmm4-%xmm7 |
| */ |
| chacha_permute: |
| |
| movdqa ROT8(%rip),%xmm4 |
| movdqa ROT16(%rip),%xmm5 |
| |
| .Ldoubleround: |
| # x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
| paddd %xmm1,%xmm0 |
| pxor %xmm0,%xmm3 |
| pshufb %xmm5,%xmm3 |
| |
| # x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
| paddd %xmm3,%xmm2 |
| pxor %xmm2,%xmm1 |
| movdqa %xmm1,%xmm6 |
| pslld $12,%xmm6 |
| psrld $20,%xmm1 |
| por %xmm6,%xmm1 |
| |
| # x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
| paddd %xmm1,%xmm0 |
| pxor %xmm0,%xmm3 |
| pshufb %xmm4,%xmm3 |
| |
| # x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
| paddd %xmm3,%xmm2 |
| pxor %xmm2,%xmm1 |
| movdqa %xmm1,%xmm7 |
| pslld $7,%xmm7 |
| psrld $25,%xmm1 |
| por %xmm7,%xmm1 |
| |
| # x1 = shuffle32(x1, MASK(0, 3, 2, 1)) |
| pshufd $0x39,%xmm1,%xmm1 |
| # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
| pshufd $0x4e,%xmm2,%xmm2 |
| # x3 = shuffle32(x3, MASK(2, 1, 0, 3)) |
| pshufd $0x93,%xmm3,%xmm3 |
| |
| # x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
| paddd %xmm1,%xmm0 |
| pxor %xmm0,%xmm3 |
| pshufb %xmm5,%xmm3 |
| |
| # x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
| paddd %xmm3,%xmm2 |
| pxor %xmm2,%xmm1 |
| movdqa %xmm1,%xmm6 |
| pslld $12,%xmm6 |
| psrld $20,%xmm1 |
| por %xmm6,%xmm1 |
| |
| # x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
| paddd %xmm1,%xmm0 |
| pxor %xmm0,%xmm3 |
| pshufb %xmm4,%xmm3 |
| |
| # x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
| paddd %xmm3,%xmm2 |
| pxor %xmm2,%xmm1 |
| movdqa %xmm1,%xmm7 |
| pslld $7,%xmm7 |
| psrld $25,%xmm1 |
| por %xmm7,%xmm1 |
| |
| # x1 = shuffle32(x1, MASK(2, 1, 0, 3)) |
| pshufd $0x93,%xmm1,%xmm1 |
| # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
| pshufd $0x4e,%xmm2,%xmm2 |
| # x3 = shuffle32(x3, MASK(0, 3, 2, 1)) |
| pshufd $0x39,%xmm3,%xmm3 |
| |
| sub $2,%r8d |
| jnz .Ldoubleround |
| |
| ret |
| ENDPROC(chacha_permute) |
| |
| ENTRY(chacha_block_xor_ssse3) |
| # %rdi: Input state matrix, s |
| # %rsi: up to 1 data block output, o |
| # %rdx: up to 1 data block input, i |
| # %rcx: input/output length in bytes |
| # %r8d: nrounds |
| FRAME_BEGIN |
| |
| # x0..3 = s0..3 |
| movdqa 0x00(%rdi),%xmm0 |
| movdqa 0x10(%rdi),%xmm1 |
| movdqa 0x20(%rdi),%xmm2 |
| movdqa 0x30(%rdi),%xmm3 |
| movdqa %xmm0,%xmm8 |
| movdqa %xmm1,%xmm9 |
| movdqa %xmm2,%xmm10 |
| movdqa %xmm3,%xmm11 |
| |
| mov %rcx,%rax |
| call chacha_permute |
| |
| # o0 = i0 ^ (x0 + s0) |
| paddd %xmm8,%xmm0 |
| cmp $0x10,%rax |
| jl .Lxorpart |
| movdqu 0x00(%rdx),%xmm4 |
| pxor %xmm4,%xmm0 |
| movdqu %xmm0,0x00(%rsi) |
| # o1 = i1 ^ (x1 + s1) |
| paddd %xmm9,%xmm1 |
| movdqa %xmm1,%xmm0 |
| cmp $0x20,%rax |
| jl .Lxorpart |
| movdqu 0x10(%rdx),%xmm0 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x10(%rsi) |
| # o2 = i2 ^ (x2 + s2) |
| paddd %xmm10,%xmm2 |
| movdqa %xmm2,%xmm0 |
| cmp $0x30,%rax |
| jl .Lxorpart |
| movdqu 0x20(%rdx),%xmm0 |
| pxor %xmm2,%xmm0 |
| movdqu %xmm0,0x20(%rsi) |
| # o3 = i3 ^ (x3 + s3) |
| paddd %xmm11,%xmm3 |
| movdqa %xmm3,%xmm0 |
| cmp $0x40,%rax |
| jl .Lxorpart |
| movdqu 0x30(%rdx),%xmm0 |
| pxor %xmm3,%xmm0 |
| movdqu %xmm0,0x30(%rsi) |
| |
| .Ldone: |
| FRAME_END |
| ret |
| |
| .Lxorpart: |
| # xor remaining bytes from partial register into output |
| mov %rax,%r9 |
| and $0x0f,%r9 |
| jz .Ldone |
| and $~0x0f,%rax |
| |
| mov %rsi,%r11 |
| |
| lea 8(%rsp),%r10 |
| sub $0x10,%rsp |
| and $~31,%rsp |
| |
| lea (%rdx,%rax),%rsi |
| mov %rsp,%rdi |
| mov %r9,%rcx |
| rep movsb |
| |
| pxor 0x00(%rsp),%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| |
| mov %rsp,%rsi |
| lea (%r11,%rax),%rdi |
| mov %r9,%rcx |
| rep movsb |
| |
| lea -8(%r10),%rsp |
| jmp .Ldone |
| |
| ENDPROC(chacha_block_xor_ssse3) |
| |
| ENTRY(hchacha_block_ssse3) |
| # %rdi: Input state matrix, s |
| # %rsi: output (8 32-bit words) |
| # %edx: nrounds |
| FRAME_BEGIN |
| |
| movdqa 0x00(%rdi),%xmm0 |
| movdqa 0x10(%rdi),%xmm1 |
| movdqa 0x20(%rdi),%xmm2 |
| movdqa 0x30(%rdi),%xmm3 |
| |
| mov %edx,%r8d |
| call chacha_permute |
| |
| movdqu %xmm0,0x00(%rsi) |
| movdqu %xmm3,0x10(%rsi) |
| |
| FRAME_END |
| ret |
| ENDPROC(hchacha_block_ssse3) |
| |
| ENTRY(chacha_4block_xor_ssse3) |
| # %rdi: Input state matrix, s |
| # %rsi: up to 4 data blocks output, o |
| # %rdx: up to 4 data blocks input, i |
| # %rcx: input/output length in bytes |
| # %r8d: nrounds |
| |
| # This function encrypts four consecutive ChaCha blocks by loading the |
| # the state matrix in SSE registers four times. As we need some scratch |
| # registers, we save the first four registers on the stack. The |
| # algorithm performs each operation on the corresponding word of each |
| # state matrix, hence requires no word shuffling. For final XORing step |
| # we transpose the matrix by interleaving 32- and then 64-bit words, |
| # which allows us to do XOR in SSE registers. 8/16-bit word rotation is |
| # done with the slightly better performing SSSE3 byte shuffling, |
| # 7/12-bit word rotation uses traditional shift+OR. |
| |
| lea 8(%rsp),%r10 |
| sub $0x80,%rsp |
| and $~63,%rsp |
| mov %rcx,%rax |
| |
| # x0..15[0-3] = s0..3[0..3] |
| movq 0x00(%rdi),%xmm1 |
| pshufd $0x00,%xmm1,%xmm0 |
| pshufd $0x55,%xmm1,%xmm1 |
| movq 0x08(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| movq 0x10(%rdi),%xmm5 |
| pshufd $0x00,%xmm5,%xmm4 |
| pshufd $0x55,%xmm5,%xmm5 |
| movq 0x18(%rdi),%xmm7 |
| pshufd $0x00,%xmm7,%xmm6 |
| pshufd $0x55,%xmm7,%xmm7 |
| movq 0x20(%rdi),%xmm9 |
| pshufd $0x00,%xmm9,%xmm8 |
| pshufd $0x55,%xmm9,%xmm9 |
| movq 0x28(%rdi),%xmm11 |
| pshufd $0x00,%xmm11,%xmm10 |
| pshufd $0x55,%xmm11,%xmm11 |
| movq 0x30(%rdi),%xmm13 |
| pshufd $0x00,%xmm13,%xmm12 |
| pshufd $0x55,%xmm13,%xmm13 |
| movq 0x38(%rdi),%xmm15 |
| pshufd $0x00,%xmm15,%xmm14 |
| pshufd $0x55,%xmm15,%xmm15 |
| # x0..3 on stack |
| movdqa %xmm0,0x00(%rsp) |
| movdqa %xmm1,0x10(%rsp) |
| movdqa %xmm2,0x20(%rsp) |
| movdqa %xmm3,0x30(%rsp) |
| |
| movdqa CTRINC(%rip),%xmm1 |
| movdqa ROT8(%rip),%xmm2 |
| movdqa ROT16(%rip),%xmm3 |
| |
| # x12 += counter values 0-3 |
| paddd %xmm1,%xmm12 |
| |
| .Ldoubleround4: |
| # x0 += x4, x12 = rotl32(x12 ^ x0, 16) |
| movdqa 0x00(%rsp),%xmm0 |
| paddd %xmm4,%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| pxor %xmm0,%xmm12 |
| pshufb %xmm3,%xmm12 |
| # x1 += x5, x13 = rotl32(x13 ^ x1, 16) |
| movdqa 0x10(%rsp),%xmm0 |
| paddd %xmm5,%xmm0 |
| movdqa %xmm0,0x10(%rsp) |
| pxor %xmm0,%xmm13 |
| pshufb %xmm3,%xmm13 |
| # x2 += x6, x14 = rotl32(x14 ^ x2, 16) |
| movdqa 0x20(%rsp),%xmm0 |
| paddd %xmm6,%xmm0 |
| movdqa %xmm0,0x20(%rsp) |
| pxor %xmm0,%xmm14 |
| pshufb %xmm3,%xmm14 |
| # x3 += x7, x15 = rotl32(x15 ^ x3, 16) |
| movdqa 0x30(%rsp),%xmm0 |
| paddd %xmm7,%xmm0 |
| movdqa %xmm0,0x30(%rsp) |
| pxor %xmm0,%xmm15 |
| pshufb %xmm3,%xmm15 |
| |
| # x8 += x12, x4 = rotl32(x4 ^ x8, 12) |
| paddd %xmm12,%xmm8 |
| pxor %xmm8,%xmm4 |
| movdqa %xmm4,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm4 |
| por %xmm0,%xmm4 |
| # x9 += x13, x5 = rotl32(x5 ^ x9, 12) |
| paddd %xmm13,%xmm9 |
| pxor %xmm9,%xmm5 |
| movdqa %xmm5,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm5 |
| por %xmm0,%xmm5 |
| # x10 += x14, x6 = rotl32(x6 ^ x10, 12) |
| paddd %xmm14,%xmm10 |
| pxor %xmm10,%xmm6 |
| movdqa %xmm6,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm6 |
| por %xmm0,%xmm6 |
| # x11 += x15, x7 = rotl32(x7 ^ x11, 12) |
| paddd %xmm15,%xmm11 |
| pxor %xmm11,%xmm7 |
| movdqa %xmm7,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm7 |
| por %xmm0,%xmm7 |
| |
| # x0 += x4, x12 = rotl32(x12 ^ x0, 8) |
| movdqa 0x00(%rsp),%xmm0 |
| paddd %xmm4,%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| pxor %xmm0,%xmm12 |
| pshufb %xmm2,%xmm12 |
| # x1 += x5, x13 = rotl32(x13 ^ x1, 8) |
| movdqa 0x10(%rsp),%xmm0 |
| paddd %xmm5,%xmm0 |
| movdqa %xmm0,0x10(%rsp) |
| pxor %xmm0,%xmm13 |
| pshufb %xmm2,%xmm13 |
| # x2 += x6, x14 = rotl32(x14 ^ x2, 8) |
| movdqa 0x20(%rsp),%xmm0 |
| paddd %xmm6,%xmm0 |
| movdqa %xmm0,0x20(%rsp) |
| pxor %xmm0,%xmm14 |
| pshufb %xmm2,%xmm14 |
| # x3 += x7, x15 = rotl32(x15 ^ x3, 8) |
| movdqa 0x30(%rsp),%xmm0 |
| paddd %xmm7,%xmm0 |
| movdqa %xmm0,0x30(%rsp) |
| pxor %xmm0,%xmm15 |
| pshufb %xmm2,%xmm15 |
| |
| # x8 += x12, x4 = rotl32(x4 ^ x8, 7) |
| paddd %xmm12,%xmm8 |
| pxor %xmm8,%xmm4 |
| movdqa %xmm4,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm4 |
| por %xmm0,%xmm4 |
| # x9 += x13, x5 = rotl32(x5 ^ x9, 7) |
| paddd %xmm13,%xmm9 |
| pxor %xmm9,%xmm5 |
| movdqa %xmm5,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm5 |
| por %xmm0,%xmm5 |
| # x10 += x14, x6 = rotl32(x6 ^ x10, 7) |
| paddd %xmm14,%xmm10 |
| pxor %xmm10,%xmm6 |
| movdqa %xmm6,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm6 |
| por %xmm0,%xmm6 |
| # x11 += x15, x7 = rotl32(x7 ^ x11, 7) |
| paddd %xmm15,%xmm11 |
| pxor %xmm11,%xmm7 |
| movdqa %xmm7,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm7 |
| por %xmm0,%xmm7 |
| |
| # x0 += x5, x15 = rotl32(x15 ^ x0, 16) |
| movdqa 0x00(%rsp),%xmm0 |
| paddd %xmm5,%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| pxor %xmm0,%xmm15 |
| pshufb %xmm3,%xmm15 |
| # x1 += x6, x12 = rotl32(x12 ^ x1, 16) |
| movdqa 0x10(%rsp),%xmm0 |
| paddd %xmm6,%xmm0 |
| movdqa %xmm0,0x10(%rsp) |
| pxor %xmm0,%xmm12 |
| pshufb %xmm3,%xmm12 |
| # x2 += x7, x13 = rotl32(x13 ^ x2, 16) |
| movdqa 0x20(%rsp),%xmm0 |
| paddd %xmm7,%xmm0 |
| movdqa %xmm0,0x20(%rsp) |
| pxor %xmm0,%xmm13 |
| pshufb %xmm3,%xmm13 |
| # x3 += x4, x14 = rotl32(x14 ^ x3, 16) |
| movdqa 0x30(%rsp),%xmm0 |
| paddd %xmm4,%xmm0 |
| movdqa %xmm0,0x30(%rsp) |
| pxor %xmm0,%xmm14 |
| pshufb %xmm3,%xmm14 |
| |
| # x10 += x15, x5 = rotl32(x5 ^ x10, 12) |
| paddd %xmm15,%xmm10 |
| pxor %xmm10,%xmm5 |
| movdqa %xmm5,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm5 |
| por %xmm0,%xmm5 |
| # x11 += x12, x6 = rotl32(x6 ^ x11, 12) |
| paddd %xmm12,%xmm11 |
| pxor %xmm11,%xmm6 |
| movdqa %xmm6,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm6 |
| por %xmm0,%xmm6 |
| # x8 += x13, x7 = rotl32(x7 ^ x8, 12) |
| paddd %xmm13,%xmm8 |
| pxor %xmm8,%xmm7 |
| movdqa %xmm7,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm7 |
| por %xmm0,%xmm7 |
| # x9 += x14, x4 = rotl32(x4 ^ x9, 12) |
| paddd %xmm14,%xmm9 |
| pxor %xmm9,%xmm4 |
| movdqa %xmm4,%xmm0 |
| pslld $12,%xmm0 |
| psrld $20,%xmm4 |
| por %xmm0,%xmm4 |
| |
| # x0 += x5, x15 = rotl32(x15 ^ x0, 8) |
| movdqa 0x00(%rsp),%xmm0 |
| paddd %xmm5,%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| pxor %xmm0,%xmm15 |
| pshufb %xmm2,%xmm15 |
| # x1 += x6, x12 = rotl32(x12 ^ x1, 8) |
| movdqa 0x10(%rsp),%xmm0 |
| paddd %xmm6,%xmm0 |
| movdqa %xmm0,0x10(%rsp) |
| pxor %xmm0,%xmm12 |
| pshufb %xmm2,%xmm12 |
| # x2 += x7, x13 = rotl32(x13 ^ x2, 8) |
| movdqa 0x20(%rsp),%xmm0 |
| paddd %xmm7,%xmm0 |
| movdqa %xmm0,0x20(%rsp) |
| pxor %xmm0,%xmm13 |
| pshufb %xmm2,%xmm13 |
| # x3 += x4, x14 = rotl32(x14 ^ x3, 8) |
| movdqa 0x30(%rsp),%xmm0 |
| paddd %xmm4,%xmm0 |
| movdqa %xmm0,0x30(%rsp) |
| pxor %xmm0,%xmm14 |
| pshufb %xmm2,%xmm14 |
| |
| # x10 += x15, x5 = rotl32(x5 ^ x10, 7) |
| paddd %xmm15,%xmm10 |
| pxor %xmm10,%xmm5 |
| movdqa %xmm5,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm5 |
| por %xmm0,%xmm5 |
| # x11 += x12, x6 = rotl32(x6 ^ x11, 7) |
| paddd %xmm12,%xmm11 |
| pxor %xmm11,%xmm6 |
| movdqa %xmm6,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm6 |
| por %xmm0,%xmm6 |
| # x8 += x13, x7 = rotl32(x7 ^ x8, 7) |
| paddd %xmm13,%xmm8 |
| pxor %xmm8,%xmm7 |
| movdqa %xmm7,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm7 |
| por %xmm0,%xmm7 |
| # x9 += x14, x4 = rotl32(x4 ^ x9, 7) |
| paddd %xmm14,%xmm9 |
| pxor %xmm9,%xmm4 |
| movdqa %xmm4,%xmm0 |
| pslld $7,%xmm0 |
| psrld $25,%xmm4 |
| por %xmm0,%xmm4 |
| |
| sub $2,%r8d |
| jnz .Ldoubleround4 |
| |
| # x0[0-3] += s0[0] |
| # x1[0-3] += s0[1] |
| movq 0x00(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd 0x00(%rsp),%xmm2 |
| movdqa %xmm2,0x00(%rsp) |
| paddd 0x10(%rsp),%xmm3 |
| movdqa %xmm3,0x10(%rsp) |
| # x2[0-3] += s0[2] |
| # x3[0-3] += s0[3] |
| movq 0x08(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd 0x20(%rsp),%xmm2 |
| movdqa %xmm2,0x20(%rsp) |
| paddd 0x30(%rsp),%xmm3 |
| movdqa %xmm3,0x30(%rsp) |
| |
| # x4[0-3] += s1[0] |
| # x5[0-3] += s1[1] |
| movq 0x10(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm4 |
| paddd %xmm3,%xmm5 |
| # x6[0-3] += s1[2] |
| # x7[0-3] += s1[3] |
| movq 0x18(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm6 |
| paddd %xmm3,%xmm7 |
| |
| # x8[0-3] += s2[0] |
| # x9[0-3] += s2[1] |
| movq 0x20(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm8 |
| paddd %xmm3,%xmm9 |
| # x10[0-3] += s2[2] |
| # x11[0-3] += s2[3] |
| movq 0x28(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm10 |
| paddd %xmm3,%xmm11 |
| |
| # x12[0-3] += s3[0] |
| # x13[0-3] += s3[1] |
| movq 0x30(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm12 |
| paddd %xmm3,%xmm13 |
| # x14[0-3] += s3[2] |
| # x15[0-3] += s3[3] |
| movq 0x38(%rdi),%xmm3 |
| pshufd $0x00,%xmm3,%xmm2 |
| pshufd $0x55,%xmm3,%xmm3 |
| paddd %xmm2,%xmm14 |
| paddd %xmm3,%xmm15 |
| |
| # x12 += counter values 0-3 |
| paddd %xmm1,%xmm12 |
| |
| # interleave 32-bit words in state n, n+1 |
| movdqa 0x00(%rsp),%xmm0 |
| movdqa 0x10(%rsp),%xmm1 |
| movdqa %xmm0,%xmm2 |
| punpckldq %xmm1,%xmm2 |
| punpckhdq %xmm1,%xmm0 |
| movdqa %xmm2,0x00(%rsp) |
| movdqa %xmm0,0x10(%rsp) |
| movdqa 0x20(%rsp),%xmm0 |
| movdqa 0x30(%rsp),%xmm1 |
| movdqa %xmm0,%xmm2 |
| punpckldq %xmm1,%xmm2 |
| punpckhdq %xmm1,%xmm0 |
| movdqa %xmm2,0x20(%rsp) |
| movdqa %xmm0,0x30(%rsp) |
| movdqa %xmm4,%xmm0 |
| punpckldq %xmm5,%xmm4 |
| punpckhdq %xmm5,%xmm0 |
| movdqa %xmm0,%xmm5 |
| movdqa %xmm6,%xmm0 |
| punpckldq %xmm7,%xmm6 |
| punpckhdq %xmm7,%xmm0 |
| movdqa %xmm0,%xmm7 |
| movdqa %xmm8,%xmm0 |
| punpckldq %xmm9,%xmm8 |
| punpckhdq %xmm9,%xmm0 |
| movdqa %xmm0,%xmm9 |
| movdqa %xmm10,%xmm0 |
| punpckldq %xmm11,%xmm10 |
| punpckhdq %xmm11,%xmm0 |
| movdqa %xmm0,%xmm11 |
| movdqa %xmm12,%xmm0 |
| punpckldq %xmm13,%xmm12 |
| punpckhdq %xmm13,%xmm0 |
| movdqa %xmm0,%xmm13 |
| movdqa %xmm14,%xmm0 |
| punpckldq %xmm15,%xmm14 |
| punpckhdq %xmm15,%xmm0 |
| movdqa %xmm0,%xmm15 |
| |
| # interleave 64-bit words in state n, n+2 |
| movdqa 0x00(%rsp),%xmm0 |
| movdqa 0x20(%rsp),%xmm1 |
| movdqa %xmm0,%xmm2 |
| punpcklqdq %xmm1,%xmm2 |
| punpckhqdq %xmm1,%xmm0 |
| movdqa %xmm2,0x00(%rsp) |
| movdqa %xmm0,0x20(%rsp) |
| movdqa 0x10(%rsp),%xmm0 |
| movdqa 0x30(%rsp),%xmm1 |
| movdqa %xmm0,%xmm2 |
| punpcklqdq %xmm1,%xmm2 |
| punpckhqdq %xmm1,%xmm0 |
| movdqa %xmm2,0x10(%rsp) |
| movdqa %xmm0,0x30(%rsp) |
| movdqa %xmm4,%xmm0 |
| punpcklqdq %xmm6,%xmm4 |
| punpckhqdq %xmm6,%xmm0 |
| movdqa %xmm0,%xmm6 |
| movdqa %xmm5,%xmm0 |
| punpcklqdq %xmm7,%xmm5 |
| punpckhqdq %xmm7,%xmm0 |
| movdqa %xmm0,%xmm7 |
| movdqa %xmm8,%xmm0 |
| punpcklqdq %xmm10,%xmm8 |
| punpckhqdq %xmm10,%xmm0 |
| movdqa %xmm0,%xmm10 |
| movdqa %xmm9,%xmm0 |
| punpcklqdq %xmm11,%xmm9 |
| punpckhqdq %xmm11,%xmm0 |
| movdqa %xmm0,%xmm11 |
| movdqa %xmm12,%xmm0 |
| punpcklqdq %xmm14,%xmm12 |
| punpckhqdq %xmm14,%xmm0 |
| movdqa %xmm0,%xmm14 |
| movdqa %xmm13,%xmm0 |
| punpcklqdq %xmm15,%xmm13 |
| punpckhqdq %xmm15,%xmm0 |
| movdqa %xmm0,%xmm15 |
| |
| # xor with corresponding input, write to output |
| movdqa 0x00(%rsp),%xmm0 |
| cmp $0x10,%rax |
| jl .Lxorpart4 |
| movdqu 0x00(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x00(%rsi) |
| |
| movdqu %xmm4,%xmm0 |
| cmp $0x20,%rax |
| jl .Lxorpart4 |
| movdqu 0x10(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x10(%rsi) |
| |
| movdqu %xmm8,%xmm0 |
| cmp $0x30,%rax |
| jl .Lxorpart4 |
| movdqu 0x20(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x20(%rsi) |
| |
| movdqu %xmm12,%xmm0 |
| cmp $0x40,%rax |
| jl .Lxorpart4 |
| movdqu 0x30(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x30(%rsi) |
| |
| movdqa 0x20(%rsp),%xmm0 |
| cmp $0x50,%rax |
| jl .Lxorpart4 |
| movdqu 0x40(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x40(%rsi) |
| |
| movdqu %xmm6,%xmm0 |
| cmp $0x60,%rax |
| jl .Lxorpart4 |
| movdqu 0x50(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x50(%rsi) |
| |
| movdqu %xmm10,%xmm0 |
| cmp $0x70,%rax |
| jl .Lxorpart4 |
| movdqu 0x60(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x60(%rsi) |
| |
| movdqu %xmm14,%xmm0 |
| cmp $0x80,%rax |
| jl .Lxorpart4 |
| movdqu 0x70(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x70(%rsi) |
| |
| movdqa 0x10(%rsp),%xmm0 |
| cmp $0x90,%rax |
| jl .Lxorpart4 |
| movdqu 0x80(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x80(%rsi) |
| |
| movdqu %xmm5,%xmm0 |
| cmp $0xa0,%rax |
| jl .Lxorpart4 |
| movdqu 0x90(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0x90(%rsi) |
| |
| movdqu %xmm9,%xmm0 |
| cmp $0xb0,%rax |
| jl .Lxorpart4 |
| movdqu 0xa0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xa0(%rsi) |
| |
| movdqu %xmm13,%xmm0 |
| cmp $0xc0,%rax |
| jl .Lxorpart4 |
| movdqu 0xb0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xb0(%rsi) |
| |
| movdqa 0x30(%rsp),%xmm0 |
| cmp $0xd0,%rax |
| jl .Lxorpart4 |
| movdqu 0xc0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xc0(%rsi) |
| |
| movdqu %xmm7,%xmm0 |
| cmp $0xe0,%rax |
| jl .Lxorpart4 |
| movdqu 0xd0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xd0(%rsi) |
| |
| movdqu %xmm11,%xmm0 |
| cmp $0xf0,%rax |
| jl .Lxorpart4 |
| movdqu 0xe0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xe0(%rsi) |
| |
| movdqu %xmm15,%xmm0 |
| cmp $0x100,%rax |
| jl .Lxorpart4 |
| movdqu 0xf0(%rdx),%xmm1 |
| pxor %xmm1,%xmm0 |
| movdqu %xmm0,0xf0(%rsi) |
| |
| .Ldone4: |
| lea -8(%r10),%rsp |
| ret |
| |
| .Lxorpart4: |
| # xor remaining bytes from partial register into output |
| mov %rax,%r9 |
| and $0x0f,%r9 |
| jz .Ldone4 |
| and $~0x0f,%rax |
| |
| mov %rsi,%r11 |
| |
| lea (%rdx,%rax),%rsi |
| mov %rsp,%rdi |
| mov %r9,%rcx |
| rep movsb |
| |
| pxor 0x00(%rsp),%xmm0 |
| movdqa %xmm0,0x00(%rsp) |
| |
| mov %rsp,%rsi |
| lea (%r11,%rax),%rdi |
| mov %r9,%rcx |
| rep movsb |
| |
| jmp .Ldone4 |
| |
| ENDPROC(chacha_4block_xor_ssse3) |
